Medical solid laser device

Abstract

The present application provides a medical solid laser device, comprising: a laser, wherein a laser beam outputted by the laser has a changing first light spot size; lens arrays, which are arranged on a light exit side of the laser, wherein each lens array comprises a plurality of lenses having different focal lengths; lens driving mechanisms, wherein each lens driving mechanism is connected to one corresponding lens array and is used for driving the corresponding lens array to move so as to switch a lens opposite to the laser; a laser measurement assembly, which is located on a light exit side of each lens array and is used for measuring a second light spot size of the laser beam; and a controller, which is connected to the lens driving mechanisms and the laser measurement assembly, wherein the controller is configured to control, on the basis of the second light spot size, each lens driving mechanism to switch a lens so as to change the beam expansion ratio of the corresponding lens array, thereby at least partially offsetting the change of the second light spot size caused by the change of the first light spot size.

Description

Medical solid-state laser device

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to the Chinese patent application filed with the China Patent Office on September 25, 2023, with application number 202311240255.0 and application name “Medical Solid-State Laser Device”, the entire contents of which are incorporated herein by reference. Technical Field

[0003] The present application relates to a medical solid-state laser device. Background Art

[0004] Lasers, characterized by their monochromaticity, collimation, and excellent consistency, have long been used in clinical medicine as an effective treatment for a variety of diseases. Lasers are also used in aesthetic medicine, with laser cosmetic surgery being one such procedure. Laser cosmetic surgery has seen rapid growth in recent years, primarily used to remove and improve unsightly blemishes or defects.

[0005] In some clinical medical fields, such as aesthetic treatments, not only do the wavelength, energy, energy density, and pulse width of the laser directly affect the clinical treatment effect, but the diameter of the laser spot on the treatment surface is also a more important parameter. For example, when using ablative fractional lasers for scar removal, the diameter of the laser microbeam is usually required to be between 100μm and 500μm. The inventors realized that if the diameter of the laser spot is too large, it will aggravate the inflammatory response of the wound healing, prolong the healing period, and increase the chance of scarring. If the diameter of the laser spot is too small, the treatment area will also become smaller, resulting in insufficient tissue trauma and stimulation, thus failing to achieve the desired treatment effect.

[0006] Summary of the Invention

[0007] According to an embodiment of the present application, a medical solid-state laser device is provided, comprising: a laser, wherein a laser beam output by the laser has a variable first spot size; at least one lens array, arranged on the light-emitting side of the laser, each lens array comprising a plurality of lenses with different focal lengths; at least one lens driving mechanism, each lens driving mechanism being connected to a corresponding lens array and configured to drive the corresponding lens array to move so as to switch the lens opposite to the laser; a laser detection assembly, located on the light-emitting side of at least one lens array and configured to detect a second spot size of the laser beam; and a controller, connecting the at least one lens driving mechanism and the laser detection assembly, the controller being configured to control the at least one lens driving mechanism to switch the lens according to the second spot size, so as to change the beam expansion ratio of the at least one lens array, thereby at least partially offsetting the second spot size change caused by the first spot size change.

[0008] In some embodiments, at least one lens array includes a first lens array and a second lens array spaced apart from each other, and the plurality of lenses in the first lens array and the second lens array include concave lenses, convex lenses, and plane mirrors.

[0009] In some embodiments, the multiple lenses of each lens array are distributed along the circumference, and each lens driving mechanism is used to drive the multiple lenses of the corresponding lens array to rotate along the circumference.

[0010] In some embodiments, the multiple lenses of each lens array are distributed along a straight line, and each lens driving mechanism is used to drive the multiple lenses of the corresponding lens array to move along the straight line.

[0011] In some embodiments, the medical solid-state laser device further includes a light-guiding arm disposed on the light-emitting side of the laser detection assembly; and a handpiece disposed on the light-emitting side of the light-guiding arm.

[0012] In some embodiments, the laser detection component is also used to detect the power, frequency and pulse width of the laser beam. The controller is also connected to the laser and is further configured to adjust the parameters of the laser according to the power, frequency and pulse width of the laser beam before controlling at least one lens driving mechanism to switch the lens according to the second spot size.

[0013] In some embodiments, the laser detection assembly includes a first beam splitter, a second beam splitter disposed on one of the light output paths of the first beam splitter, and a camera and a power feedback element respectively disposed on two light output paths of the second beam splitter.

[0014] In some embodiments, the medical solid-state laser device also includes a shutter arranged on the light-emitting side of at least one lens array. The controller is connected to the shutter and is configured to close the shutter before the power, frequency, pulse width and size of the laser beam reach predetermined requirements.

[0015] In some embodiments, the laser includes a total reflection mirror, a crystal rod, a laser output mirror, and a light source, and the centers of the total reflection mirror, the crystal rod, and the laser output mirror are located on the same axis.

[0016] In some embodiments, the laser is an erbium laser.

[0017] The details of one or more embodiments of the present application are set forth in the accompanying drawings and the description below. Other features and advantages of the present application will become apparent from the description, drawings, and claims. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0019] FIG1 is a schematic structural diagram of a medical solid-state laser device according to an embodiment of the present application;

[0020] FIG2 is a side view of a lens array in a medical solid-state laser device according to an embodiment of the present application;

[0021] FIG3 is a front view of a lens array in a medical solid-state laser device according to an embodiment of the present application;

[0022] FIG4 is a front view of a lens array in a medical solid-state laser device in another embodiment of the present application. DETAILED DESCRIPTION

[0023] To more clearly illustrate the technical solutions of the embodiments of this application, the following is a brief introduction to the drawings required for describing the embodiments. Obviously, the drawings described below are merely examples or embodiments of this application. Those skilled in the art can apply this application to other similar scenarios based on these drawings without inventive effort. Unless otherwise apparent from the context or otherwise noted, the same reference numerals in the figures represent the same structure or operation.

[0024] As used in this application and the claims, unless the context clearly indicates otherwise, the words "a," "an," "an," and / or "the" are not intended to refer to the singular but may include the plural. Generally speaking, the terms "comprises" and "include" only indicate the inclusion of the steps and elements specifically identified, and these steps and elements do not constitute an exclusive list. A method or apparatus may also include other steps or elements.

[0025] Unless otherwise specifically stated, the relative arrangement of the parts and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present application. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the drawings are not drawn according to actual proportional relationships. The techniques, methods and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the techniques, methods and equipment should be considered as part of the authorization specification. In all examples shown and discussed here, any specific values ​​should be interpreted as being merely exemplary and not as limitations. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following figures, and therefore, once an item is defined in one figure, it does not need to be further discussed in subsequent figures.

[0026] In the description of this application, it should be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "horizontal, vertical, vertical, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of this application; the directional words "inside and outside" refer to the inside and outside relative to the outline of each component itself.

[0027] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used herein to describe the spatial positional relationship of a device or feature to other devices or features as shown in the figures. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figures. For example, if the device in the drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0028] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is solely for the purpose of distinguishing the corresponding components. Unless otherwise stated, these terms have no special meaning and therefore should not be construed as limiting the scope of protection of this application. Furthermore, while the terms used in this application are selected from commonly known and commonly used terms, some terms mentioned in this specification may have been selected by the applicant at his or her discretion, and their detailed meanings are explained in the relevant sections of this description. Furthermore, this application should be understood not only by the actual terms used, but also by the meaning implied by each term.

[0029] This application proposes a medical solid-state laser device 10 (hereinafter referred to as laser device 10) with reference to Figures 1 to 4. Laser device 10 primarily includes a laser 101, a lens array 102, a lens drive mechanism 103, a laser detection assembly 104, and a controller 105. Specifically, Figure 1 is a schematic structural diagram of laser device 10, Figure 2 is a side view of lens array 102 in laser device 10, and Figures 3 and 4 are front views of different types of lens arrays 102 in laser device 10.

[0030] Furthermore, the laser beam output by the laser 101 has a variable spot size, referred to herein as a first spot size. In one example, the laser 101 includes a total reflection mirror 1011, a crystal rod 1012, a laser output mirror 1013, and a light source 1014, wherein the centers of the total reflection mirror 1011, the crystal rod 1012, and the laser output mirror 1013 are located on the same axis x. The laser 101 is preferably an erbium (Er) laser, and the light source 1014 is preferably a xenon lamp original pump source. The xenon lamp original pump source is a high-energy short pulse method with high frequency and high intensity, and is suitable as a light source for an erbium laser. The laser generated by the laser 101 is a parallel light with a divergence angle. Due to the thermal lens effect of the crystal, especially the relatively large thermal lens effect of erbium metal, the diameter of the laser spot output to the treatment surface will change with changes in frequency and energy. In particular, some special wavelengths (such as the 2940nm wavelength of Er:YAG crystal) cannot be transmitted through optical fiber or the transmission effect in optical fiber is poor, and laser transmission requires the use of light guide arms and other methods. The spot diameter of these special wavelengths is greatly affected by changes in frequency and energy. In addition, the use of high-energy short-pulse pumping will cause uneven heat distribution in the laser crystal, and the thermal effect caused by high-energy short-pulse pumping and cooling will aggravate the axial thermal elongation and radial refractive index gradient of the laser medium, causing the beam wavefront and polarization state to be distorted. Therefore, the output light spot with a first spot size varies greatly. Therefore, in order to obtain a light spot of relatively fixed size on the treatment surface, the laser device 10 changes the size of the light spot by injecting a laser beam with a first spot size into the lens array 102.

[0031] Furthermore, the laser device 10 can use multiple lens arrays 102 according to the needs of actual application, and each lens array 102 is arranged on the light-emitting side of the laser 101. Referring more clearly to FIG2 , each lens array 102 includes multiple lenses with different focal lengths. In this embodiment, the laser device 10 includes a first lens array 1021 and a second lens array 1022 spaced apart from each other, each of which includes multiple lenses with different focal lengths. The lenses can be concave lenses, convex lenses, and / or plane mirrors. For example, the first lens array 1021 includes multiple concave lenses, and the second lens array 1022 includes multiple convex lenses; or the first lens array 1021 includes at least one convex lens and at least one concave lens, and the second lens array 1022 includes at least one convex lens and at least one concave lens; or the first lens array 1021 includes at least one concave lens and at least one plane mirror, and the second lens array 1022 includes at least one convex lens and at least one plane mirror; and so on.

[0032] In the process of adjusting the light spot, each of the first lens array 1021 and the second lens array 1022 has a lens located on the same axis x as the center of the laser 101 (including the total reflection mirror 1011, the crystal rod 1012, and the laser output mirror 1013). By selecting lenses with appropriate focal lengths in the two lens arrays, the beam expansion ratio of the beam expander composed of the two can be changed, thereby changing the light spot size. At this time, the light beam with a first spot size emitted from the laser 101 will output a light beam with a second spot size after adjustment of the first lens array 1021 and the second lens array 1022. The laser device 10 also includes a lens driving mechanism 103, which is correspondingly connected to the lens array 102, that is, each lens array 102 is correspondingly connected to a lens driving mechanism 103, and the lens driving mechanism 103 is used to drive the corresponding lens array 102 to move to switch the lens opposite to the laser 101. Preferably, the lens driving mechanism 103 may be a stepping motor, such as Delta's AFB1224SHE and AFB1224VH stepping motors.

[0033] 3 , in one example, multiple lenses in the lens array 102 are distributed along a circumference, and each lens driving mechanism 103 corresponding to the lens array 102 is used to drive the multiple lenses of the corresponding lens array 102 to rotate along the circumference, thereby changing the lens located on the axis x.

[0034] 4 , in another example, the multiple lenses in the lens array 102 can also be distributed along a straight line. In this case, each lens driving mechanism 103 corresponding to the lens array 102 is used to drive the multiple lenses of the corresponding lens array 102 to move along a straight line, thereby changing the lens located on the axis x.

[0035] Furthermore, continuing to refer to Figure 1, the laser device 10 also includes a laser detection component 104 and a controller 105. The laser detection component 104 is located on the light-emitting side of the lens array 102, and is used to detect the second spot size of the laser beam emitted through the first lens array 1021 and the second lens array 1022, and can also detect parameters such as the power, frequency and pulse width of the laser beam. The laser detection component 104 includes a first beam splitter 1041, a second beam splitter 1042 arranged on one of the light-emitting paths of the first beam splitter 1041, and a camera 1043 and a power feedback element 1044 arranged on the two light-emitting paths of the second beam splitter 1042. The camera 1043 is used to detect the second spot size. The power feedback element 1044 is used to detect the power, frequency and pulse width of the laser beam. Preferably, the camera 1043 can be a CCD camera. The controller 105 is connected to the laser 101, the lens drive mechanism 103, and the laser detection component 104 (more specifically, the camera 1043 and the power feedback element 1044). The controller 105 can adjust the parameters of the laser 101 according to the power, frequency, and pulse width of the laser beam with the second spot size detected by the laser detection component 104, and then control the lens drive mechanism 103 to switch lenses according to the second spot size to change the beam expansion ratio of the lens array 102, thereby changing the divergence angle of the output laser, at least partially offsetting the change in the second spot size caused by the change in the first spot size, so that when the laser is transmitted to the treatment surface, it can ensure that the diameter of the laser spot with the second spot size reaches the set value while maintaining the same size, meeting the needs of clinical use and ensuring the treatment effect. Exemplarily, the laser device 10 also includes a shutter 106. The controller 105 is connected to the shutter 106 and is configured to close the shutter 106 before the power, frequency, pulse width, and size of the laser beam reach predetermined requirements.

[0036] Illustratively, the laser device 10 further includes a light guide arm 107 and a handpiece 108. The light guide arm 107 is located on the light-emitting side of the laser detection assembly 104 and is the portion within the dashed box in FIG1 . The handpiece 108 is located on the light-emitting side of the light guide arm 107.

[0037] To more clearly describe the functions of the various structures in the laser device 10, the process of adjusting the spot size of the laser device 10 is briefly described. First, the laser beam with a first spot size emitted by the laser 101 passes through the first lens array 1021 and the second lens array 1022. At this time, the waist position and waist radius of the laser beam will change. It is generally believed that the laser generated by the laser 101 propagates in space in the form of a Gaussian beam. At this time, the waist position of the laser 101 is considered to be at the center of the laser 101. The spot diameter of the output laser beam with the first spot size can be solved using the following formula:

[0038] Where z is the distance on the propagation axis; ω0 is the beam waist radius, Z=0 is the position of the beam waist; F is the confocal parameter of the Gaussian beam; λ is the laser wavelength; ω(Z) is the spot radius at point z.

[0039] The laser beam with the first spot size then passes through the first lens array 1021 and the second lens array 1022. The laser beam output from the lens array 102 has a second spot size. The radius of the spot can be calculated using the following formula:

[0040] Where ω0 is the beam waist radius, L′ c is the distance between the waist position of the outgoing light beam and the optical center of the lens, ω′0 is the waist radius of the outgoing light beam, and f is the focal length of the lens in the first lens array 1021 and the second lens array 1022 that is located on the same axis as the center of the total reflection mirror 1011, the crystal rod 1012, and the laser output mirror 1013.

[0041] When the power, frequency, or pulse width of laser 101, as reported by power feedback element 1044, changes, controller 105 closes shutter 106. Controller 105 continues to detect the spot diameter and laser power of the laser beam with the second spot size emitted from laser 101 using camera 1043 and power feedback element 1044. Based on the detection results, controller 105 determines whether the coordination of the lenses in first lens array 1021 and second lens array 1022 meets the expected requirements for the output laser spot diameter, power, frequency, and pulse width. If so, controller 105 opens shutter 106, allowing the laser beam to pass through light-guiding arm 107 and handpiece 108 to reach the treatment area, achieving the desired treatment. If the output laser spot diameter, size, frequency, and pulse width do not meet the expected requirements, controller 105 adjusts the voltage and frequency of the power supply to laser 101 and performs further detection via power feedback element 1044 until the output laser power, frequency, and pulse width meet the requirements. Then, the controller 105 controls the lens driving mechanism 103 to continuously adjust the coordination of lenses of different focal lengths in the first lens array 1021 and / or the second lens array 1022 to change the beam expansion ratio, thereby adjusting the divergence angle of the laser beam. The divergence angle can be solved by the following formula:

[0042] Among them, θ out is the divergence angle of the lens output, θ in is the divergence angle of the input lens, and m is the beam expansion ratio. m can be solved by the following formula:

[0043] Wherein, f3 is the focal length of the lens in the first lens array 1021 that is coaxial with the center of the total reflection mirror 1011, the crystal rod 1012, and the laser output mirror 1013, and f4 is the focal length of the lens in the second lens array 1022 that is coaxial with the center of the total reflection mirror 1011, the crystal rod 1012, and the laser output mirror 1013. in will change with the output power and frequency of the laser 101, so if you need to ensure θ out If the lens array 1021 and the second lens array 1022 do not change, the focal lengths of the lenses in the first lens array 1021 and the second lens array 1022 can be adjusted by the lens driving mechanism 103, that is, the beam expansion ratio m is adjusted so that the divergence angle of the laser beam output tends to be consistent or uniform. If a larger adjustment of the divergence angle is required, the lenses with larger focal lengths in the first lens array 1021 and the second lens array 1022 can be selected for cooperation. If only a smaller adjustment of the divergence angle is required, the lenses with smaller focal lengths in the first lens array 1021 and the second lens array 1022 can be selected for cooperation. For example, when only the lenses in the first lens array 1021 are selected to adjust the divergence angle of the laser beam, the lenses in the second lens array 1022 are plane mirrors, and when only the lenses in the second lens array 1022 are selected to adjust the divergence angle of the laser beam, the lenses in the first lens array 1021 are plane mirrors. During the process of adjusting the divergence angle of the laser beam, the output light spot is also detected by the camera 1043. When the camera 1043 and the power feedback element 1044 detect that the output second spot size, power, frequency and pulse width meet the expected requirements, the adjustment of the lens drive mechanism 103 is stopped and the light shutter 106 is opened, so that the laser passes through the light guide arm 107 and the handpiece 108 to reach the treatment surface, thereby achieving the purpose of treatment.

[0044] The above-mentioned embodiments of the present application change the emission angle of the laser by setting a lens array, thereby adjusting the spot size of the laser beam, so that when the spot size of the laser beam changes, this change can be offset, making the spot size more stable and meeting the needs of clinical use. The embodiments of the present application also combine the detection and adjustment of the power, frequency, pulse width and size of the laser, so that the parameter adjustment of the laser device is more complete and accurate, and the safety of the device is improved. The basic concepts have been described above. Obviously, for those skilled in the art, the above-mentioned invention disclosure is only used as an example and does not constitute a limitation of the present application. Although it is not explicitly stated here, those skilled in the art may make various modifications, improvements and corrections to the present application. Such modifications, improvements and corrections are suggested in this application, so such modifications, improvements and corrections still fall within the spirit and scope of the exemplary embodiments of the present application.

[0045] At the same time, this application uses specific terms to describe the embodiments of this application. For example, "one embodiment," "an embodiment," and / or "some embodiments" refer to a certain feature, structure, or characteristic related to at least one embodiment of this application. Therefore, it should be emphasized and noted that "one embodiment," "an embodiment," or "an alternative embodiment" mentioned twice or multiple times in different locations in this specification does not necessarily refer to the same embodiment. In addition, certain features, structures, or characteristics in one or more embodiments of this application may be appropriately combined.

[0046] Similarly, it should be noted that, in order to simplify the presentation of this application and thus facilitate understanding of one or more embodiments of the invention, the foregoing descriptions of the embodiments of this application sometimes combine multiple features into a single embodiment, figure, or description thereof. However, this disclosure method does not mean that the subject matter of this application requires more features than those recited in the claims. In fact, an embodiment may have fewer features than all of the features of a single embodiment disclosed above.

[0047] In some embodiments, numbers are used to describe the quantity of components and attributes. It should be understood that such numbers used in the description of the embodiments are modified by the modifiers "about", "approximately" or "substantially" in some examples. Unless otherwise stated, "about", "approximately" or "substantially" indicate that the numbers are allowed to vary by ±20%. Accordingly, in some embodiments, the numerical parameters used in the description and claims are approximate values, which may change according to the required features of individual embodiments. In some embodiments, the numerical parameters should take into account the specified significant digits and adopt the general method of retaining digits. Although the numerical domains and parameters used to confirm the breadth of their range in some embodiments of the present application are approximate values, in specific embodiments, the settings of such numerical values ​​are as accurate as possible within the feasible range.

[0048] Although the present application has been described with reference to the current specific embodiments, ordinary technicians in this technical field should recognize that the above embodiments are only used to illustrate the present application, and various equivalent changes or substitutions can be made without departing from the spirit of the present application. Therefore, as long as the changes and modifications to the above embodiments are within the scope of the essential spirit of the present application, they will fall within the scope of the claims of the present application.

Claims

1. A medical solid-state laser device, comprising: A laser, wherein the laser beam output by the laser has a variable first spot size; At least one lens array, arranged at the light-emitting side of the laser, each lens array comprising a plurality of lenses with different focal lengths; At least one lens driving mechanism, each lens driving mechanism is connected to a corresponding lens array and is used to drive the corresponding lens array to switch the lens opposite to the laser; A laser detection component, located at the light-emitting side of the at least one lens array, and used to detect a second spot size of the laser beam; as well as A controller is connected to the at least one lens driving mechanism and the laser detection component, and the controller is configured to control the at least one lens driving mechanism to switch lenses according to the second spot size to change the beam expansion ratio of the at least one lens array, thereby at least partially offsetting the second spot size change caused by the first spot size change.

2. The medical solid-state laser device according to claim 1, characterized in that: The at least one lens array includes a first lens array and a second lens array spaced apart from each other, and the plurality of lenses in the first lens array and the second lens array include concave lenses, convex lenses and plane mirrors.

3. The medical solid-state laser device according to claim 1 or 2, characterized in that: The multiple lenses of each lens array are distributed along the circumference, and each lens driving mechanism is used to drive the multiple lenses of the corresponding lens array to rotate along the circumference.

4. The medical solid-state laser device according to claim 1 or 2, characterized in that: The multiple lenses of each lens array are distributed along a straight line, and each lens driving mechanism is used to drive the multiple lenses of the corresponding lens array to move along the straight line.

5. The medical solid-state laser device according to claim 1, characterized in that: Also includes: A light guide arm, arranged on the light emitting side of the laser detection assembly; as well as The hand tool is arranged on the light emitting side of the light guide arm.

6. The medical solid-state laser device according to claim 1, characterized in that: The laser detection component is also used to detect the power, frequency and pulse width of the laser beam. The controller is also connected to the laser and is also configured to adjust the parameters of the laser according to the power, frequency and pulse width of the laser beam before controlling the at least one lens driving mechanism to switch the lens according to the second spot size.

7. The medical solid-state laser device according to claim 6, characterized in that: The laser detection component includes a first beam splitter, a second beam splitter arranged on one of the light output paths of the first beam splitter, and a camera and a power feedback element respectively arranged on two light output paths of the second beam splitter.

8. The medical solid-state laser device according to claim 1, characterized in that: It also includes an optical shutter arranged on the light-emitting side of the at least one lens array. The controller is connected to the optical shutter and is configured to close the optical shutter before the power, frequency, pulse width and size of the laser beam reach predetermined requirements.

9. The medical solid-state laser device according to claim 1, characterized in that: The laser comprises a total reflection mirror, a crystal rod, a laser output mirror and a light source, and the centers of the total reflection mirror, the crystal rod and the laser output mirror are located on the same axis.

10. The medical solid-state laser device according to claim 1, characterized in that: The laser is an erbium laser.

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